Scroll to see break-even price per barrel for oil in 2015 for select oil producers, and click on a country's name for more details. modest oil-price recovery and currency devaluations have lowered breakeven prices for countries like Russia and Nigeria, but some petrostates still need oil prices above $100 a barrel to balance their budgets.
There are dozens of types of gemstones â including diamonds, colored gemstones, and pearls â each with a unique set of physical and optical properties. GIRDLE â The narrow band around the perimeter of a polished or faceted diamond or colored gemstone.
Quick Birthstone Facts. 1  The original gemstones in the Breastplate of Aaron were: Chrysoprasus, Carbuncle, Ruby, Topaz, Sapphire, Diamond, Cyanus, Agate, Amethyst, Tarshish, Onyx, and Jasper. 2  According to legends, wearing a gemstone during the correlating month heightens its healing powers. The original gemstones in the Breastplate of Aaron were: Chrysoprasus, Carbuncle, Ruby, Topaz, Sapphire, Diamond, Cyanus, Agate, Amethyst, Tarshish, Onyx, and Jasper. 2  According to legends, wearing a gemstone during the correlating month heightens its healing powers.